702
(2) Pre-lubrication - This series is pre-lubricated, so no lubricator
is required. However, once lubrication has been started, it
must be continued so that the lubricant is not used up. For
lubrication, use the turbine oil Class 1 ISO VG32 (#90) or
equivalent.
(3) Filter - Install a filter with a 5
μ
m or less filter element.
Design & Selection
CR circuit
Triode AC switch
Leakage
current
C
R
Solenoid valve
Programmable
controller side
Air operated 2, 3 port valve (coolant valve) (CVE/CVSE)
1. Safety designing
CAUTION
䡵
Leakage current from other fluid control components
When operating the solenoid valve with a programmable
controller, etc., check that the output leakage current from the
programmable controller is within the following specifications.
Failure to observe this could lead to malfunctions.
䡵
CVSE Series cannot be used in an explosive gas atmosphere.
When using in an explosive gas atmosphere, change to the
CVE Series, and provide a separate explosion proof solenoid
valve on the pilot air circuit.
䡵
If there are high levels of dust in the area, install a downward-
facing silencer or elbow joint on the exhaust port so that dust
does not enter.
䡵
When using in a place where water splashes on the valve, take
appropriate measures to protect it.
WARNING
2. Working fluid
WARNING
3. Working environment
4. How to use
䡵
Working fluid
The compatibility has not been evaluated with all coolants.
Particularly, if coolant contains high levels of chlorine or
sulfur, materials used at wetted parts could be adversely
affected. Confirm the compatibility when making a selection.
Non-corrosive fluids refer to fluids that do not affect or are not
affected when they contact the valve's wetted part materials.
cast iron (nickel plating), stainless
steel, nitrile rubber or fluoro rubber,
and epoxy resin adhesive.
䡵
External pilot air
(1) Drainage measures - Compressed air contains high levels
of drainage (water, oxidized oil, tar, foreign matter) that
can significantly reduce the reliability of pneumatic
components. As measures against drain, improve air
quality by dehumidifying with an after cooler or dryer,
removing foreign matter with a filter, and removing tar with
a tar removal filter, etc.
CAUTION
䡵
Pilot air pressure
Use pilot air pressure in accordance with the specifications.
X
Y
P
Y
P
IN
Model no.
CVE2
CVE22
CVSE2/CVSE22
CVE3
CVSE3
Pilot operation
side supply port
Unit side
supply port
Note: Pipe the unit side supply port so that the arrow on the body matches
the fluid flow direction. If supplied in reverse, internal components
could be damaged when the valve operates.
CAUTION
1. Piping
䡵
Do not pipe using the solenoid valve section. There is a risk
of damage. (For solenoid valve mounted type)
Installation & Adjustment
䡵
When piping the CVE or CVSE Series, pay attention to the
supply ports on the unit and pilot operation sides.
Wetted part materials:
100 VAC : 3 mA or less
200 VAC : 1.5 mA or less
24 VDC : 1 mA or less
must be maintained.
Safety precautions
Always read this section before starting use.
